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  • Enterprise network testing: Best practices for developing a test lab

    Enterprise network testing can minimize IT service outages, yet developing a test lab can bring up various issues. Knowing best practices for running a test facility is imperative.  Book Chapter

  • Cius vs. iPad: Can Cisco take on Apple?

    The battle for the enterprise tablet may boil down to Cisco vs. Apple and Cius vs. iPad. However, Fast Packet blogger, Greg Ferro wonders if Cisco really has the engineering and apps to win.  Fast Packet

  • LAN disaster recovery planning

    Local area network disaster recovery planning may seem simpler than data center recovery planning, but it is still full of surprises. Network admins must know the location and configuration of all components on the LAN and minimize single points of f...  Primer

  • Interop New York technology trends: Hype or ripe?

    Which Interop New York technology trends are ripe and which are hype? Interop New York experts will be discussing, virtualization, converged data center networks, cloud computing, and the all-wireless enterprise, but only some of these technologies w...  Slideshow

  • Interop New York 2010: Special news coverage

    At Interop New York 2010 this week, industry experts will focus on data center networking and convergence, cloud computing networks, server and network virtualization, application delivery, WAN performance, new wireless LAN technologies, enterprise m...  Special News Coverage

  • Primer: Multi-tenant network for the private cloud

    The push for private cloud computing networks is creating new security and management challenges for network managers. The first step is to build a multi-tenant network to isolate applications and data; next come application-aware networks.  Primer

  • CCNA quiz: Test your skills from routing configuration to VLANs

    In this CCNA quiz, you can test yourself on a number of skills found in the CCNA certification study guide, ranging from Cisco IOS router configuration to setting up VLANs with Cisco switches and monitoring spanning tree protocol operation.  Quiz

  • Interop Las Vegas 2010: Special news coverage

    Keep up with what's happening at Interop Las Vegas 2010 in this conference coverage. Read about data center networks and convergence, networking for server virtualization, network virtualization, unified communications, wireless LAN and WAN performan...  Special News Coverage

  • 2010 predictions: What IT trends will affect network administrators?

    In what way will network administrators be affected by IT trends? This 2010 prediction podcast from our networking administration expert explains how job functions will evolve this year.  Slideshow

  • Top 10 networking stories of 2009

    The top 10 networking stories of 2009 are highlighted by a push into the data center network, acquisitions, bankruptcies and new partnerships that will change networking industry leadership.  Slideshow

  • See More: Essential Knowledge on Network Administration

  • Understand Windows tracert output to troubleshoot network connectivity

    Troubleshooting network connectivity from the command line interface using the traceroute (tracert) command won't solve problems if you don't know what the output results mean. This tip examines each line of the tracert command output to help you det...  Tip

  • Using nmap for Linux administration and security

    The open source tool nmap is ideal for network troubleshooting, scanning and auditing. The tool can be used to identify devices on the network as well as the services running on them. It can also identify advanced information, such as operating syste...  Tip

  • Using tracert and TTL to troubleshoot network connectivity problems

    When the network is slow, packet loss could be the culprit. To troubleshoot your connection, learn how the time-to-live (TTL) and tracert ping commands can determine whether packet loss is occurring.  Tip

  • Checking IP configuration to troubleshoot Windows network connectivity

    You can diagnose network connectivity problems by checking your TCP/IP configuration. To learn how to do this, article author Brien Posey gives you step-by-step directions on how to perform simple command line (CL) ping tests for a computer running W...  Tip

  • Virtual machines present dynamic environment issues for network pros

    Virtual machines (VMs) routinely move between servers and can move across subnets, and virtualization blurs the line between the network and the server. These dynamic environment issues can challenge network professionals. In this tip, learn more abo...  Tip

  • Cisco interface addressing

    A look at the various commands that can be used to address Cisco router interfaces on the WAN and LAN and when to use each.  Tip

  • QoS components: A closer look

    A large component to a successful voice over IP (VoIP) infrastructure is effectively deploying a quality of service (QoS) model. QoS components entail classification and marking, congestion management, congestion avoidance, policing and shaping, and ...  Tip

  • Network test plan: Checklist for architecture changes

    For every change you make to your network architecture, you should have a test plan and a backout plan. In this tip, learn how to build a test plan and review a sample checklist of things to include.  Tip

  • Network engineering overview: Detailed design considerations

    Implementing architectural concepts and dealing with detailed network designs must be second nature to the network engineer. In the conclusion of our tip series on things network engineers need to know to be effective, Tom Lancaster provides some con...  Tip

  • Network engineering overview: Policy and process

    Policy and process may seem like dull and superfluous activities, but they exist to improve communication between different departments of your company. In the third installment of his series on things network engineers need to know to be effective, ...  Tip

  • See More: Tips on Network Administration

  • converged network adapter (CNA)

    A converged network adapter (CNA) is a single network interface card (NIC) that contains both a Fibre Channel (FC) host bus adapter (HBA) and a TCP/IP Ethernet NIC.  Definition

  • frequency-shift keying (FSK)

    Frequency-shift keying (FSK) is a method of transmitting digital signals.  Definition

  • baud

    Baud was the prevalent measure for data transmission speed until replaced by a more accurate term, bps (bits per second).  Definition

  • ping

    Ping is a basic Internet program that allows a user to verify that a particular IP address exists and can accept requests. The verb "ping" means the act of using the ping utility or command.  Definition

  • client/server

    Client/server describes the relationship between two computer programs in which one program, the client, makes a service request from another program, the server, which fulfills the request.  Definition

  • TCP/IP (Transmission Control Protocol/Internet Protocol)

    TCP/IP (Transmission Control Protocol/Internet Protocol) is the basic communication language or protocol of the Internet.  Definition

  • ARPANET

    ARPANET was the network that became the basis for the Internet. Based on a concept first published in 1967, ARPANET was developed under the direction of the U.S. Advanced Research Projects Agency (ARPA). In 1969, the idea became a modest reality with...  Definition

  • IT Survival Kit: Networking refreshers

    Quick Network Security & Hardware Refreshers School is out for college students across the US, but the learning never stops for IT professionals.  Definition

  • ELF (extremely low frequency)

    ELF (extremely low frequency) refers to an electromagnetic field having a frequency much lower than the frequencies of signals typically used in communications.  Definition

  • availability

    1) In a telephone circuit, availability is the ratio between the time during which the circuit is operational and elapsed time. 2) In a network switching system, availability is the accessibility of input and output ports.  Definition

  • See More: Definitions on Network Administration

  • Networking podcasts

    Listen to our networking podcasts and learn more about technologies you need to know to keep your network running smoothly.  Podcast

About Network Administration

Here we offer tutorials on networking basics, network documentation and network maintenance for the network administrator. Learn about network mapping and tracking network devices and IP addresses to save time and resources, along with ways to simplify routine admin tasks such as operating system upgrades and security patch management.